[Electrophysiological responses of neurons of the ventrobasal complex of the thalamus to cutaneous and articular stimulation in rats with inflammatory polyarthritis].
Spontaneous and evoked activities of neurons recorded in the ventrobasal thalamic complex of polyarthritis Rats differ from those recorded in normal Rats. More than 1/3 of them displayed spontaneous paroxystic long discharges. Numerous neurons (41%) were excited by joint movement with responses showing very long after-discharges. Some of the responses elicited by light cutaneous stimuli were of the "lemniscal" type. Other ones displayed large bilateral receptive fields, located on inflammatory areas and showed long after-discharges. Only a few neurons were exclusively activated by intense cutaneous stimuli, contrasting with the higher cumulis in normal animals.
D000200:Action Potentials; D000818:Animals; D001168:Arthritis / Q000503:physiopathology*; D004558:Electric Stimulation; D007596:Joints / Q000502:physiology; D009474:Neurons / Q000502:physiology*; D051381:Rats; D012879:Skin Physiological Phenomena; D013788:Thalamus / Q000503:physiopathology*
Réponses électrophysiologiques des neurones du complexe ventrobasal du thalamus à des stimulations cutanées et articulaires chez des rats présentant une polyarthrite inflammatoire.